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Finding the Fourth Proportional to 257,636.19, 385,843.38 and 204,156.21

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Solution

The fourth proportional to 257,636.19, 385,843.38 and 204,156.21 is: 305,750.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,636.19 : 385,843.38 = 204,156.21 : x
  2. Step 2: Convert to fraction form
    257,636.19/385,843.38 = 204,156.21/x
  3. Step 3: Cross multiply
    257,636.19x = 385,843.38 × 204,156.21
  4. Step 4: Simplify right side
    257,636.19x = 78,772,322,114.39
  5. Step 5: Solve for x
    x = 78,772,322,114.39/257,636.19
  6. Step 6: Final answer
    x = 305,750.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.